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'Phenolics' in keywords Facet   section ZfN Section C  [X]
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1Author    G. Boudourova-Krasteva3, Vassya Bankova3, J. M. Sforcinb, N. Nikolova3, S. Popov3Requires cookie*
 Title    Phenolics from Brazilian Propolis  
 Abstract    The main phenolic constituents from Brazilian propolis, originating from Sao Paulo State, were isolated and identified: three flavonoids, a prenylated coumaric acid and two new benzopyranes, E and Z 2,2-dimethyl-6-carboxyethenyl-8-prenyl-2H-benzopyranes. 
  Reference    Z. Naturforsch. 52c, 676—679 (1997); received April 7/June 9 1997 
  Published    1997 
  Keywords    Propolis, Phenolics, Flavonoids, Benzopyranes 
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 TEI-XML for    default:Reihe_C/52/ZNC-1997-52c-0676.pdf 
 Identifier    ZNC-1997-52c-0676 
 Volume    52 
2Author    Tytti Kujala, Jyrki Loponen, Kalevi PihlajaRequires cookie*
 Title    Betalains and Phenolics in Red Beetroot (Beta vulgaris) Peel Extracts: Extraction and Characterisation  
 Abstract    The extraction of red beetroot (Beta vulgaris) peel betalains and phenolics was compared with two extraction methods and solvents. The content of total phenolics in the extracts was determined according to a modification of the Folin-Ciocalteu method and expressed as gallic acid equivalents (G A E). The profiles of extracts were analysed by high-performance liquid chromatography (HPLC). The compounds of beetroot peel extracted with 80% aqueous methanol were characterised from separated fractions using HPLC-diode array detection (H PL C -D A D) and HPLC-electrospray ionisation-mass spectrometry (H PLC-ESI-M S) tech­ niques. The extraction methods and the choice of solvent affected noticeably the content of individual compounds in the extract. The betalains found in beetroot peel extract were vulgaxanthin I, vulgaxanthin II, indicaxanthin, betanin, prebetanin, isobetanin and neobe-tanin. A lso cyclodopa glucoside, /V-formylcyclodopa glucoside, glucoside of dihydroxyindol-carboxylic acid, betalamic acid, L-tryptophan, p-coumaric acid, ferulic acid and traces o f un­ identified flavonoids were detected. 
  Reference    Z. Naturforsch. 56c, 343 (2001); received January 9/February 12 2001 
  Published    2001 
  Keywords    Beta vulgaris, Betalains, Phenolics 
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 TEI-XML for    default:Reihe_C/56/ZNC-2001-56c-0343.pdf 
 Identifier    ZNC-2001-56c-0343 
 Volume    56 
3Author    Wanda Kisiel, Klaudia MichalskaRequires cookie*
 Title    Sesquiterpenoids and Phenolics from Crepis conyzifolia  
 Abstract    From the roots of Crepis conyzifolia, two new and two known guaianolides were isolated together with three known phenylpropanoids. Structures of the new compounds were estab­ lished as 8ß-hydroxy-4ß, 15-dihydrozaluzanin C and 4ß, 15, llß , 13-tetrahydrozaluzanin C-3-O-ß-glucopyranoside by spectral methods. The identity of 8 -epiisolippidiol and dentalactone was also discussed. 
  Reference    Z. Naturforsch. 56c, 961—964 (2001); received July 30/August 28 2001 
  Published    2001 
  Keywords    Crepis conyzifolia, Sesquiterpenoids, Phenolics 
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 TEI-XML for    default:Reihe_C/56/ZNC-2001-56c-0961.pdf 
 Identifier    ZNC-2001-56c-0961 
 Volume    56 
4Author    Requires cookie*
 Title    A Novel Caffeic Acid Derivative and Other Constituents of Populus Bud Excretion and Propolis (Bee-Glue)  
 Abstract    E ck h a rd W ollenw eber, Y oshinori A sakaw a*, D etlef Schillo, U lrich L eh m an n , and H eid ru n W eigel The bud exudates of Populus nigra, P. trichocarpa, and P. grandidentata x tremuloides were analyzed for the presence of phenolics and flavonoids. A novel natural product, caffeic acid y.y-dimethylallyl ester, was identified from P. nigra, along with further phenolics such as /?-hydroxy-acetophenone, dimethyl caffeic acid, cinnamoyl cinnamata and vanillin. The flavonoid aglycones correspond to those reported earlier. Propolis samples from the Sonoran Desert were shown to exhibit the flavonoid pattern that is typical for poplar bud exudates, thus confirming this material as the major source for bee-glue. Only a single flavonoid might originate from the leaf exudate of a desert shrub. 
  Reference    Z. Naturforsch. 42c, 1030—1034 (1987); received May 8/May 21 1987 
  Published    1987 
  Keywords    Populus (Salicaceae), Bud Exudate, Propolis, Phenolics, Flavonoids 
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 TEI-XML for    default:Reihe_C/42/ZNC-1987-42c-1030.pdf 
 Identifier    ZNC-1987-42c-1030 
 Volume    42 
5Author    W. Greenaway, J. May, T. Scaysbrook, F. R. WhatleyRequires cookie*
 Abstract    Analysis of bud exudate of Populus violascens by GC-MS identified 26 phenolic components. The bulk of the exudate was composed of caffeic acid esters. 
  Reference    Z. Naturforsch. 47c, 773—775 (1992); received June 91992 
  Published    1992 
  Keywords    Populus violascens, Salicaceae, Poplar, Bud Exudate, Phenolics 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0773_n.pdf 
 Identifier    ZNC-1992-47c-0773_n 
 Volume    47 
6Author    W. Greenaway, J. M. Ay, F. R. WhatleyRequires cookie*
 Abstract    Analysis by GC-MS identified 30 phenolic compo­ nents of the bud exudate of P. laurifolia. The majority of the exudate was composed of flavanones, flavanonols and chalcones, with pinobanksin-3-acetate being the major component. The bud exudate resembled that of the Asian Section Tacamahaca poplars P. cathayana and P. szechuanica but was unlike that of the North Ameri­ can Section Tacamahaca poplars, P. balsamifera and P. trichocarpa. 
  Reference    Z. Naturforsch. 47c, 776—778 (1992); received May 19 1992 
  Published    1992 
  Keywords    Populus laurifolia, Salicacae, Poplar, Bud Exudate, Phenolics 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0776_n.pdf 
 Identifier    ZNC-1992-47c-0776_n 
 Volume    47 
7Author    A. Kio Kobayashi, Yutaka Koguchi, Hiroshi Kanzaki, Shin-Ichiro Kajiyama, Kazuyoshi KawazuRequires cookie*
 Title    A New Type of Antimicrobial Phenolics Produced by Plant Peroxidase and Its Possible Role in the Chemical Defense Systems against Plant Pathogens  
 Abstract    Syringaldehyde readily reacted in the horse-radish peroxidase (H R P O D) system. The ethyl acetate extract of the reaction mixture showed a marked antimicrobial activity against bac­ teria and fungi. A fter repeated column chromatography three potential antimicrobial com ­ pounds were obtained from the extract. The structural elucidation of active compounds was achieved by a combination of spectroscopic techniques and chemical modification. 
  Reference    Z. Naturforsch. 49c, 411 (1994); received January 1/April 25 1994 
  Published    1994 
  Keywords    Peroxidase, Syringaldehyde, Phenolics, Antimicrobial Compounds, Chemical D efense System 
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 TEI-XML for    default:Reihe_C/49/ZNC-1994-49c-0411.pdf 
 Identifier    ZNC-1994-49c-0411 
 Volume    49 
8Author    Z. NaturforschRequires cookie*
 Title    Phenolic Compounds of Propolis from Central Chilean Matorral  
 Abstract    Pinocembrin, acacetin, galanguin, izalpin, kaempferide, prenyletin and diarytheptane were isolated from propolis from Central Chile. 
  Reference    Z. Naturforsch. 56c, 273—2 (2001); received D ecem ber 6 2000/January 23 2001 
  Published    2001 
  Keywords    Propolis, Structure Elucidation, Plant Sources, Phenolics 
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 TEI-XML for    default:Reihe_C/56/ZNC-2001-56c-0273.pdf 
 Identifier    ZNC-2001-56c-0273 
 Volume    56 
9Author    Jochen Berlin, Edgar Forche, Victor Wray, Joachim Hammer, Wolfgang HöselRequires cookie*
 Title    Formation of Benzophenanthridine Alkaloids by Suspension Cultures o f Eschscholtzia californica  
 Abstract    Suspension cultures of Eschscholtzia californica accum ulate the dihydro forms o f the benzo­ phenanthridine alkaloids sanguinarine, chelirubine, macarpine and chelerythrine, all o f which are known to be constituents o f the Eschscholtzia plant. U nder most experimental conditions dihydrochelirubine was found to be the main constituent of the cultured cells. The specific yields of alkaloids varied from zero to 1.7% on a dry weight basis depending on the m edia conditions. The highest specific yield was 1.5 m g/g dry weight or 13 mg/1 with the growth m edium B5. After transfer of the cells into the induction medium IM2 the alkaloid accum ulation increased to 17 mg/g dry weight and 146 mg/1. The induction m edium contained increased levels o f sucrose, decreased levels of phosphate and was devoid of phytohormones. The effect o f the various m edia conditions on the biosynthesis of phenolics was quite different to those found for the alkaloids. 
  Reference    Z. Naturforsch. 38c, 346 (1983); received February 7 1983 
  Published    1983 
  Keywords    Eschscholtzia californica, Suspension Cultures, Benzophenanthridine Alkaloids, Phenolics, Media Effects 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0346.pdf 
 Identifier    ZNC-1983-38c-0346 
 Volume    38 
10Author    S. English, W. Greenaway, F. R. WhatleyRequires cookie*
 Title    Analysis of Phenolics of Bud Exudate of Populus tristis by GC/M S  
 Abstract    Analysis of bud exudate of Populus tristis by GC/M S revealed 61 phenolic components rep­ resenting 55 phenolic compounds. Caffeic acid esters and chalcones made up the bulk of the exudate. 
  Reference    Z. Naturforsch. 47c, 512—515 (1992); received March 19 1992 
  Published    1992 
  Keywords    Populus tristis, Salicaceae, Bud Exudate, Phenolics, Acetyloxycaffeic Acid Esters 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0512.pdf 
 Identifier    ZNC-1992-47c-0512 
 Volume    47 
11Author    ChristineA. Kraus, Gerhard SpitellerRequires cookie*
 Title    Phenolic Compounds from Ageing Shoots of Picea abies  
 Abstract    The influence of ageing on the amount and composition of phenolic compounds and their glucosides was studied in one to five-year-old shoots of Picea abies. The total content of phenolics increased remarkably within the first two years of growth. In this period cinnamic acid derivatives were dominating, but beginning with the end of the first vegetation period a dramatic increase of acetophenones was observed. Obviously at the end of the first vegetation period the cinnamic acid derivatives are subjected to oxidation resulting in an increase of acetophenones. 
  Reference    Z. Naturforsch. 52c, 308 (1997); received Decem ber 19 1996/January 23 1997 
  Published    1997 
  Keywords    Picea abies, Ageing, Phenolics, Phenolic Glucosides, Quantification by GC-MS 
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 TEI-XML for    default:Reihe_C/52/ZNC-1997-52c-0308.pdf 
 Identifier    ZNC-1997-52c-0308 
 Volume    52